nimbus-eth1/nimbus/vm2/state_transactions.nim

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# Nimbus
# Copyright (c) 2018 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed except
# according to those terms.
# This source must have the <vm2_enabled> compiler flag set.
#
# why:
# ../config, ../transaction, etc include ../vm_* interface files which in
# turn will refer to the ../vm/* definitions rather than ../vm2/* unless the
# <vm2_enabled> compiler flag is set.
#
when not defined(vm2_enabled):
{.error: "NIM flag must be set: -d:vm2_enabled".}
import
../chain_config,
../constants,
../forks,
../db/accounts_cache,
../transaction,
./computation,
./interpreter_dispatch,
./interpreter/[gas_costs, gas_meter],
./message,
./state,
./types,
chronicles,
eth/common,
eth/common/eth_types,
options,
sets
proc setupTxContext*(vmState: BaseVMState, origin: EthAddress, gasPrice: GasInt, forkOverride=none(Fork)) =
## this proc will be called each time a new transaction
## is going to be executed
vmState.txOrigin = origin
vmState.txGasPrice = gasPrice
vmState.fork =
if forkOverride.isSome:
forkOverride.get
else:
Redesign of BaseVMState descriptor (#923) * Redesign of BaseVMState descriptor why: BaseVMState provides an environment for executing transactions. The current descriptor also provides data that cannot generally be known within the execution environment, e.g. the total gasUsed which is available not before after all transactions have finished. Also, the BaseVMState constructor has been replaced by a constructor that does not need pre-initialised input of the account database. also: Previous constructor and some fields are provided with a deprecated annotation (producing a lot of noise.) * Replace legacy directives in production sources * Replace legacy directives in unit test sources * fix CI (missing premix update) * Remove legacy directives * chase CI problem * rebased * Re-introduce 'AccountsCache' constructor optimisation for 'BaseVmState' re-initialisation why: Constructing a new 'AccountsCache' descriptor can be avoided sometimes when the current state root is properly positioned already. Such a feature existed already as the update function 'initStateDB()' for the 'BaseChanDB' where the accounts cache was linked into this desctiptor. The function 'initStateDB()' was removed and re-implemented into the 'BaseVmState' constructor without optimisation. The old version was of restricted use as a wrong accounts cache state would unconditionally throw an exception rather than conceptually ask for a remedy. The optimised 'BaseVmState' re-initialisation has been implemented for the 'persistBlocks()' function. also: moved some test helpers to 'test/replay' folder * Remove unused & undocumented fields from Chain descriptor why: Reduces attack surface in general & improves reading the code.
2022-01-18 16:19:32 +00:00
vmState.chainDB.config.toFork(vmState.blockNumber)
vmState.gasCosts = vmState.fork.forkToSchedule
proc refundGas*(c: Computation, tx: Transaction, sender: EthAddress) =
let maxRefund = (tx.gasLimit - c.gasMeter.gasRemaining) div 2
c.gasMeter.returnGas min(c.getGasRefund(), maxRefund)
c.vmState.mutateStateDB:
db.addBalance(sender, c.gasMeter.gasRemaining.u256 * tx.gasPrice.u256)
proc execComputation*(c: Computation) =
if not c.msg.isCreate:
c.vmState.mutateStateDB:
db.incNonce(c.msg.sender)
c.execCallOrCreate()
if c.isSuccess:
if c.fork < FkLondon:
# EIP-3529: Reduction in refunds
c.refundSelfDestruct()
shallowCopy(c.vmState.selfDestructs, c.selfDestructs)
shallowCopy(c.vmState.logEntries, c.logEntries)
c.vmState.touchedAccounts.incl c.touchedAccounts
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c.vmState.status = c.isSuccess